import unittest
from unittest.mock import patch, MagicMock, mock_open
import tempfile
import os
import yaml

class TestSplitterCore(unittest.TestCase):
    """测试核心分割器功能"""
    
    def setUp(self):
        self.test_sdf_content = {
            'package': 'test-package',
            'deps': ['dep1', 'dep2'],
            'slices': {
                'core': {
                    'deps': ['base_core'],
                    'contents': {
                        'common': ['/usr/bin/test']
                    }
                }
            }
        }
    
    @patch('tools.splitter.splitter.SDFFile')
    def test_sdf_file_parsing(self, mock_sdf_file):
        """测试SDF文件解析"""
        mock_instance = MagicMock()
        mock_instance.load.return_value = self.test_sdf_content
        mock_sdf_file.return_value = mock_instance
        
        # 这里应该实例化实际的Splitter类并测试SDF解析
        # 由于具体实现不可见，这里提供测试框架
        self.assertTrue(True)  # 占位符
    
    def test_slice_dependency_resolution(self):
        """测试slice依赖解析"""
        # 测试依赖关系解析逻辑
        test_deps = ['base_core', 'base_utils']
        # 验证依赖是否正确解析
        self.assertIsInstance(test_deps, list)
        self.assertEqual(len(test_deps), 2)
    
    @patch('tools.splitter.splitter.subprocess.run')
    def test_rpm_package_extraction(self, mock_subprocess):
        """测试RPM包提取"""
        mock_subprocess.return_value = MagicMock(returncode=0)
        
        # 测试RPM提取命令执行
        # 这里应该调用实际的RPM提取功能
        self.assertTrue(True)  # 占位符
    
    def test_file_classification(self):
        """测试文件分类逻辑"""
        test_files = [
            '/usr/bin/test_app',
            '/etc/test_config.conf',
            '/usr/lib64/test_lib.so',
            '/usr/share/doc/test_doc.txt'
        ]
        
        # 验证文件分类逻辑
        # 这里应该测试实际的文件分类功能
        self.assertEqual(len(test_files), 4)
    
    @patch('tools.splitter.splitter.os.path.exists')
    @patch('tools.splitter.splitter.os.makedirs')
    def test_output_directory_structure(self, mock_makedirs, mock_exists):
        """测试输出目录结构"""
        mock_exists.return_value = False
        
        # 测试输出目录创建逻辑
        output_path = '/tmp/test_output'
        # 这里应该调用实际的目录创建功能
        mock_makedirs.assert_not_called()  # 因为还没有调用实际功能
    
    def test_yaml_content_validation(self):
        """测试YAML内容验证"""
        invalid_yaml = "invalid: yaml: content: ["
        
        with self.assertRaises(yaml.YAMLError):
            yaml.safe_load(invalid_yaml)
    
    def test_slice_content_generation(self):
        """测试slice内容生成"""
        expected_content = {
            'common': ['/usr/bin/test'],
            'extra': {}
        }
        
        # 验证slice内容生成逻辑
        self.assertIn('common', expected_content)
        self.assertIsInstance(expected_content['common'], list)